Thunderstorms are frequent in summer. Can your switch be lightning proof?

The advent of the scorching summer is the most disturbing thing for engineers, not the scorching summer heat, but the frequent thunder and lightning. Lightning brings great security risks to the monitoring equipment, ranging from the loss of the monitoring screen or unstable screen, to the overall paralysis of the system.

1. Lightning strikes the security of the video surveillance system

Lightning that endangers the stability of the video surveillance system mainly includes direct lightning strikes and induced lightning (including electrostatic induction and electromagnetic induction). Direct lightning is a rapid discharge phenomenon that occurs between a charged cloud layer (thundercloud) and buildings, other objects, the ground, or lightning protection devices; inductive lightning is also known as lightning induction or induced overvoltage, including electrostatic induction lightning and electromagnetic induction lightning.

1. Hazardous front-end equipment

Most front-end cameras of surveillance systems are installed in outdoor open-air environments, and the risk of equipment or cables being damaged by direct lightning is relatively high. In addition, it is also very sensitive to electromagnetic interference such as lightning overvoltage, power system operating overvoltage, electrostatic discharge, etc., which can easily cause damage to the equipment and seriously cause the entire monitoring system to be paralyzed.

2. Hazardous transmission lines

According to research, induction lightning is most likely to cause damage to transmission lines. Induced lightning can invade through power cables, video cables, network cables and antennas. Due to the long distance of power cables and the small transmission loss to lightning waves, the equipment damage caused by intrusion of intruders caused by power intrusion is very obvious.

3. Hazard to back-end equipment

When the power cable, signal cable of the monitoring system or other metal cables entering the monitoring room are struck by lightning or induced by lightning, the lightning wave intrudes into the monitoring equipment along the metal wire / conductor, resulting in a high potential difference and damaging the back-end equipment. If the switch located in the monitoring room does not have lightning protection measures, it will be easily damaged by lightning.

Utop 6KV Lightning Protection Industrial Switch

Second, lightning caused switch hardware failure

Practical application shows that lightning is the main culprit causing switch hardware failure and affecting switch stability. Switch power supply failures, port failures, cables, etc. caused by lightning sometimes occur.

Power supply failure : The external power supply of the switch is unstable, and the power supply line is aging or lightning strikes easily cause damage to the power supply. Damage to other components in the machine due to the power supply often occurs.

Port failure : If a section of the twisted pair connected to the switch port is exposed outdoors, in case this cable is struck by lightning, it will cause the connected switch port to be damaged or cause unpredictable equipment damage.

Cable failure : Cable failure does not belong to the switch itself, but in actual use, cable failure often causes the switch system or port to not work properly. Due to lightning damage to the cables, etc., the device may become unusable.

Therefore, in order to prevent lightning damage to the switch, the lightning protection design of the switch is very important.

Utop 6KV Lightning Protection Engineering Special Switch

3. Special switch for lightning protection project, so that the switch is not afraid of lightning strike

In order to prevent the switch from being damaged by lightning strikes, Utop has recently launched the P series 5 / 8-port lightning protection engineering special switch suitable for security monitoring applications after launching an industrial-grade switch with 6KV lightning protection performance.

The protection circuit of this series of products adopts TSS discharge tube, which can reach 6KV lightning protection level, which can prevent switch damage or monitoring screen loss caused by lightning strikes. The product adopts high-performance P0640SC protection device, which can pass the common mode lightning strike test standard of 6KV-8 / 20us or 1.2 / 50us waveform.

The test video shows that under lightning test, a certain brand of switch products with the same specifications that do not have lightning protection performance are damaged instantly during the lightning strike test, but the UTP lightning protection special switch with 6KV lightning protection performance is unscathed. The machine after the test It can still continue to work normally.

The use of special switches for lightning protection projects will greatly improve the stability of the entire video surveillance system, thereby reducing the maintenance work of engineering personnel, and saving labor and cost.

Product details

About Utop

Utop was founded in 2005, focusing on security video transmission technology research and development for 13 years, with more than 200 technical patents, software copyrights and other intellectual property rights. The company is a national high-tech enterprise, a well-known brand in Shenzhen, a well-known brand in China's security, the ten most influential brands in the field of security transmission, and a recommended brand for safe city construction.

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